CVE-2021-36127 Information disclosure in n/a
Attackers can identify suppressed MediaWiki accounts via search result discrepancies on the GlobalUserRights page, violating privacy expectations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-36127?
CVE-2021-36127 is a medium-severity vulnerability in Mediawiki Mediawiki, published on 2 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in the CentralAuth extension in MediaWiki through 1.36. The Special:GlobalUserRights page provided search results which, for a suppressed MediaWiki user, were different than for any other user, thus easily disclosing suppressed accounts (which are supposed to be completely hidden).
Weakness: CWE-922
Which versions are affected by CVE-2021-36127?
1 open source package ship an affected version, including mediawiki. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mediawiki Bitnami | All versions | 1.36.1 |
Products include Mediawiki Mediawiki.
How do I fix CVE-2021-36127?
Upgrade mediawiki to 1.36.1 or later.
Is CVE-2021-36127 being exploited?
There is no known exploitation of CVE-2021-36127 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as BIT-mediawiki-2021-36127, GHSA-w282-r3c9-792f.